The Righteous for the Unrighteous
How does God create a community of saints out of sinful men and women? How can He avert the reproach of unrighteousness if He makes a covenant with sinners? How can the sinner become righteous without impairing the righteousness of God?
The answer is that God justifies Himself by appearing as His own advocate in defense of His own righteousness. And it is in the cross of Christ that this supreme miracle happens.
- Dietrich Bonhoeffer